5. Consider the relation PROPERTY (propertyid,address,city,zip,tax-base,tenant) giving, for each rental property in a company, the property identifier, the address (street number and name), city, zip code, tax, and tenant name. The following FDs hold: propertyid - address,city,zip ziptax-base The propertyid does not determine tenant because a property can have several tenants. (a) Give all the keys of PROPERTY. (b) Decompose PROPERTY into 3NF relations. Make sure the decomposition is lossless